Javascript_practice/record_collection.js at master · arshadumrethi/Javascript_practice · GitHub

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// Accessing Nested Objects.
var collection = {
    "2548": {
      "album": "Slippery When Wet",
      "artist": "Bon Jovi",
      "tracks": [
        "Let It Rock",
        "You Give Love a Bad Name"
      ]
    },
    "2468": {
      "album": "1999",
      "artist": "Prince",
      "tracks": [
        "1999",
        "Little Red Corvette"
      ]
    },
    "1245": {
      "artist": "Robert Palmer",
      "tracks": [ ]
    },
    "5439": {
      "album": "ABBA Gold"
    }
};


function updateRecords(id, prop, value) {
    if (prop === "tracks" && value !== "") {
      if(collection[id][prop]) {
        collection[id][prop].push(value);
   }
      else {
        collection[id][prop]=[value];
   }
  } else if (value !== "") {
    collection[id][prop] = value;
  } else {
    delete collection[id][prop];
  }


  return collection;
}


updateRecords(5439, "artist", "ABBA");